Cornwall to Williamsport: Road Trip Guide & Distance

How far is Cornwall from Williamsport?

The distance from Cornwall to Williamsport is 285 miles (458.6 km) as the crow flies. Williamsport is located SSW of Cornwall. By car, the driving distance is approximately 356.2 miles, taking about 7h 10min. A direct flight would take roughly 1h 4min. Cornwall is in Ontario, Canada, while Williamsport is in Pennsylvania, United States.

For a drive of this length, it's recommended to plan at least one quick rest stop to stretch your legs and grab a coffee. Since you'll be heading mostly West, pack a good pair of sunglasses if you plan to drive during the late afternoon to avoid the harsh sun glare. Keep in mind this route crosses international borders. Don't forget your passport, and check current border crossing times and vehicle insurance requirements.

Coordinates come from public place data for Cornwall and Williamsport. The driving distance is estimated from straight-line distance with a road-factor model, so confirm the route in your navigation app. Fuel, flight, bus, and train values are planning estimates and can change by date, provider, road closures, and border rules.